Olympic Competition, Day 2

Italy's Federica Pellegrini starts her heat in the women's 400-meter freestyle at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London.

The Associated Press

A spectator poses for a photo under the Olympic rings inside of the Olympic Park at the 2012 Summer Olympics, Sunday, July 29, 2012, in London. (AP Photo/Darron Cummings)

Visitors arrive at the Olympic Park during the 2012 Summer Olympics, Sunday, July 29, 2012, in London. (AP Photo/Emilio Morenatti)

Visitors walk near the Olympic Stadium at the Olympic Park during the 2012 Summer Olympics, Sunday, July 29, 2012, in London. (AP Photo/Emilio Morenatti)

A volunteer indicates the direction for the Olympic Park as visitors arrive at the 2012 Summer Olympics, Sunday, July 29, 2012, in London.(AP Photo/Emilio Morenatti)

Italian gymnast Vanessa Ferrari chalks her feet before a performance on the beam during the Artistic Gymnastic women's qualifications at the 2012 Summer Olympics, Sunday, July 29, 2012, in London. (AP Photo/Julie Jacobson)

The Netherland's Sanne Keizer signals her partner during a beach volleyball match against Spain at the 2012 Summer Olympics, Sunday, July 29, 2012, in London. (AP Photo/Dave Martin)

Gymnast Do Thi Ngan Thuong from Vietnam performs on the balance beam during the Artistic Gymnastics women's qualification at the 2012 Summer Olympics, Sunday, July 29, 2012, in London. (AP Photo/Gregory Bull)

United States' Lebron James looks up the court during the first half of a preliminary men's basketball game against France at the 2012 Summer Olympics, Sunday, July 29, 2012, in London. (AP Photo/Charles Krupa)

Nigeria's Ike Diogu scores against Tunisia during the second half of a preliminary men's basketball game at the 2012 Summer Olympics, Sunday, July 29, 2012, in London. (AP Photo/Eric Gay)